4  * SPDX-License-Identifier: Apache-2.0
55 	uint32_t payload_size;		/* Buffer size without packet header.  */
60 /* Hostlink packet header.  */
63 	uint32_t total_size;	/* Size of packet including header.  */
102 	char reserved[HL_MAX_DCACHE_LINE - HL_HEADERS_SZ];
113 	/* Payload buffer */
114 	volatile union payload_u payload;  member
122  * some features which require bigger payload buffer this might become not true.
212 /* Get hostlink payload size (iochunk + reserved space).  */
215 	return sizeof(__HOSTLINK__.payload);  in hl_payload_size()
218 #define ALIGN(x, y) (((x) + ((y) - 1)) & ~((y) - 1))
220 /* Fill hostlink packet header.  */
223 	hl_write32(&pkt->packet_id, 1);  in hl_pkt_init()
224 	hl_write32(&pkt->total_size, ALIGN(size, 4) + sizeof(struct hl_pkt_hdr));  in hl_pkt_init()
225 	hl_write32(&pkt->priority, 0);  in hl_pkt_init()
226 	hl_write32(&pkt->type, 0);  in hl_pkt_init()
227 	hl_write32(&pkt->checksum, 0);  in hl_pkt_init()
262  * Wait for host response and return pointer to hostlink payload.
295 	hl_write16(&pack->type, PAT_INT);  in hl_static_pack_int()
296 	hl_write16(&pack->size, 4);  in hl_static_pack_int()
297 	hl_write32(&pack->value, value);  in hl_static_pack_int()
302 	hl_write16(&pack->type, PAT_STRING);  in hl_static_pack_char()
303 	hl_write16(&pack->size, 1);  in hl_static_pack_char()
304 	hl_write8(&pack->payload_short, c);  in hl_static_pack_char()
309 	uint16_t type = hl_read16(&pack->type);  in hl_static_unpack_int()
310 	uint16_t size = hl_read16(&pack->size);  in hl_static_unpack_int()
313 		return -1;  in hl_static_unpack_int()
317 		return -1;  in hl_static_unpack_int()
320 	*value = hl_read32(&pack->value);  in hl_static_unpack_int()
329 	 * in, int -> syscall (HL_SYSCALL_WRITE)  in hl_write_char()
330 	 * in, int -> file descriptor  in hl_write_char()
331 	 * in, ptr -> buffer  in hl_write_char()
332 	 * in, int -> bytes number  in hl_write_char()
333 	 * out, int -> bytes written  in hl_write_char()
337 	hl_static_pack_int(&__HOSTLINK__.payload.pkt_write_char_put.syscall_nr, HL_SYSCALL_WRITE);  in hl_write_char()
339 	hl_static_pack_int(&__HOSTLINK__.payload.pkt_write_char_put.fd, fd);  in hl_write_char()
341 	hl_static_pack_char(&__HOSTLINK__.payload.pkt_write_char_put.buff, c);  in hl_write_char()
343 	hl_static_pack_int(&__HOSTLINK__.payload.pkt_write_char_put.nbyte, 1);  in hl_write_char()
349 	int ret = hl_static_unpack_int(&__HOSTLINK__.payload.pkt_write_char_get.byte_written, &bwr);  in hl_write_char()
357 		ret = -1;  in hl_write_char()
371  * @return 0 if a character arrived, -1 if the input buffer if empty.
378 	return -1;  in uart_hostlink_poll_in()